Propane tanks for the home can be installed either above or below ground. Propane tanks are available in a range of sizes to accommodate your needs. Common sizes for above ground tanks are 120, 250, 500, or 1,000 gallon, while underground tanks are usually either 500 or 1,000 gallons. The size of the tank needed depends on how much propane will be used, which varies by size of the home, climate, and the number of appliances powered by propane.
Auxin. Auxin. (Science: plant biology) a group of plant growth substances (often called phytohormones or plant hormones), the most common example being indole Acetic Acid (IAA), responsible for raising the ph around cells, making the cell wall less rigid and allowing elongation.he concentration of auxin has the deciding effect on how much (and where) growth occurs in a plant. Please contribute to this project, if you have more information about this term feel free to edit this page. This page was last modified on 3 October 2005, at 21:16.This page has been accessed 23,348 times.
Slide 2: Nature of Auxins The term auxin is derived from the Greek word auxein which means to grow. Compounds are generally considered auxins if they can be characterized by their ability to induce cell elongation in stems and otherwise resemble indoleacetic acid (the first auxin isolated) in physiological activity.ranslocation of Auxin Auxin travels from cell to cell being taken up on one side of the cell by influx transporters in the plasma membrane and moved out on the other side by efflux transporters-called PIN proteins-where it can then be taken up by the adjacent cell.